固体火箭发动机喷管型面的研究进展

固体火箭发动机喷管型面设计直接关系到喷管效率和推力大小,是喷管设计中的重要研究课题。本文从喷管型面设计方法、型面参数优化和喷管流固热耦合分析等方面综述了国内外对固体火箭发动机喷管型面的研究进展。总结出了直接优化方法、特型喷管的设计方法、六次Bézier曲线、双三次样条曲线构造扩张段型线和B-Spline曲线和特征线方法等喷管型面的设计方法,并介绍了计算流体动力学(CFD)和随机优化方法在固体火箭发动机(SRM)设计优化中的运用。分析了固体火箭发动机喷管涉及到的流固热耦合问题,并结合文献介绍了经典CFD算法、CBS有限元算法和格子波尔兹曼在研究流固热耦合问题上的运用。

Latest Studies on Solid Rocket Engine Nozzle Profile

The counter design of solid rocket engine nozzle profile is directly related to nozzle efficiency and thrust,which is an important research topic in the design of nozzle.In this paper,the research progress on the nozzle profile of solid rocket motor has been reviewed from the aspects of nozzle design method,profile parameter optimization and nozzle fluid-solid coupling analysis.The nozzle design methods such as the direct optimization method,length-shorted nozzle,the six-time Bezier curve,Bi-cubic spline,the B-Spline curve and the method of characteristics are summarized.The applications of computational fluid dynamics and stochastic optimization methods in solid rocket motor design optimization are introduced.The fluid-solid thermal coupling problem of solid rocket engine nozzle has been analyzed.The classical computational fluid dynamics algorithm,characteristic-based split finite element algorithm and a lattice Boltzmann algorithm are used in the study of fluid-solid coupling problems.